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Figure 4
(a) Sketch of the experimental setup for time-resolved pump–probe measurements. (b) Intensity pattern recorded with LH polarized light tuned to 52.8 eV when the FeGd thin film was saturated along the z axis (positive saturation). (c) Difference signal between panel (b) and the corresponding image obtained saturating the sample in the opposite direction (negative saturation). By doing so, the common background can be removed, and the relative changes are highlighted. (d) Polar profiles obtained in a ±15° range around the intensity minimum labelled by A for panel (b) and for the corresponding image obtained at negative saturation. After fitting, a relative Faraday rotation of (4.6 ± 0.4)° has been evaluated.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 29| Part 4| July 2022| Pages 969-977
https://doi.org/10.1107/S1600577522004027
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